Clausen, Maja-Lisa http://orcid.org/0000-0003-4517-5376
Slotved, H.-C. http://orcid.org/0000-0002-7294-4911
Krogfelt, Karen A. http://orcid.org/0000-0001-7536-3453
Agner, Tove
Article History
Received: 7 September 2017
Accepted: 16 January 2018
First Online: 26 January 2018
Competing Interests
: The authors declare that they have no competing interests.